検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Localized magnetic excitations in the fully frustrated dimerized magnet Ba$$_{2}$$CoSi$$_{2}$$O$$_{6}$$Cl$$_{2}$$

完全に局在したダイマー磁性体Ba$$_{2}$$CoSi$$_{2}$$O$$_{6}$$Cl$$_{2}$$における局所的磁気励起

栗田 伸之*; 山本 大輔*; 金坂 拓哉*; 古川 信夫*; 河村 聖子   ; 中島 健次  ; 田中 秀数*

Kurita, Nubuyuki*; Yamamoto, Daisuke*; Kanesaka, Takuya*; Furukawa, Nobuo*; Kawamura, Seiko; Nakajima, Kenji; Tanaka, Hidekazu*

Magnetic excitations of the effective spin $$S$$ =1/2 dimerized magnet Ba$$_{2}$$CoSi$$_{2}$$O$$_{6}$$Cl$$_{2}$$ have been probed directly via inelastic neutron scattering experiments. We observed five types of excitation, which are all dispersionless within the resolution limits. The scattering intensities of the three low-lying excitations were found to exhibit different $$Q$$-dependences. Detailed analysis has demonstrated that Ba$$_{2}$$CoSi$$_{2}$$O$$_{6}$$Cl$$_{2}$$ is a two dimensional spin dimer system described only by a single dimer site, where the triplet excitations are localized owing to the almost perfect frustration of the interdimer exchange interactions and the undimerized spins, even in small concentration, make an essential contribution to the excitation spectrum.

Access

:

- Accesses

InCites™

:

パーセンタイル:37.12

分野:Physics, Multidisciplinary

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.